Brown has now swum lifetime bests in the 50 free 4 times in 2018 alone.
Margalis took a half second off of her season-best with this swim.
Among the top swims to watch tonight is the men’s 50 free, where Michael Andrew and Caeleb Dressel will race for the title.
Michael Andrew dominated the men’s 50 free prelims at the Atlanta Classic in 22.10.
Erika Brown, who had huge breakouts during the NCAA season, is already improving in the long course pool after her best time in the 100 fly this morning.
Ryan Lochte is 33, which to some might feel too old to continue training and competing in the 400 IM. But Lochte continues to astound, finishing as the top 400 IM qualifier with a 4:30.35 this morning.
After tying with Nathan Adrian in prelims, Micahel Chadwick will challenge for the 100 free title tonight.
Matt Grevers will dive in for today’s 100 back prelims.
After an extended time out of the pool, Micah Sumrall (Formerly Lawrence) has made her return to competition in 2018, competing in both pro swims in Atlanta and Mesa
The 2012 Olympic Champion in the 200 free, Allison Schmitt, is expected to get back to racing this weekend in Mesa.